Dynkin Puns

I'm not sure that I can post this in this subreddit, but I but here we go.

I've been studying Dynkin Diagrams for a while, but I can't grasp what are the applications in physics.

Can anyone help me understand where can we use Dynkin Diagrams in physics to "solve problems"?

Thanks!

How can I show that the Dynkin system generated by n subsets of a set has at most 2^(n+1) elements?

It's easy to show for pairwise disjoint subsets and intuitively I feel like that's when the cardinality is maximal, but I haven't found a proof yet.

Thanks for any help!

Every time I wikipedia some polyhedron or symmetry groups, I see a Coxeter-Dynkin diagram. I am having trouble understanding it from the wikipedia page on it, so can someone either briefly explain it to me or point me somewhere where I can learn it?

I noticed that four of my favorite researchers were born on the same day, so I'm proposing May 11 as Diagram Day. Activity -- make a diagram.

• Feyman diagram
• Dynkin diagram
• Dijkstra diagram
• Kármán vortex street
• Kármán–Gabrielli diagram

All four of them made many highly useful diagrams.

I'm having trouble with what's going on in tensor products such as [1,0,0,0] \ocross [0,0,0,1] = [1,0,0,1] \oplus [0,0,1,0] in the SO(8) i.e. D_4 algebra. It might just be the Dynkin label notation but this kind of computation eludes me.

[1,0,0,0] is the 8-dimensional vector representation [0,0,0,1] the (I think) spinor (dimension 16?) [1,0,0,1] gravitino (dim = ??) [0,0,1,0] antisymmetric 3-form of dimension 56

Really technically I know, but any help would be appreciated.

On Wikipedia, I see these funny looking diagrams next to shapes. How does this diagram relate to what the shapes actually are and look like?

I don't want to step on anybody's toes here, but the amount of non-dad jokes here in this subreddit really annoys me. First of all, dad jokes CAN be NSFW, it clearly says so in the sub rules. Secondly, it doesn't automatically make it a dad joke if it's from a conversation between you and your child. Most importantly, the jokes that your CHILDREN tell YOU are not dad jokes. The point of a dad joke is that it's so cheesy only a dad who's trying to be funny would make such a joke. That's it. They are stupid plays on words, lame puns and so on. There has to be a clever pun or wordplay for it to be considered a dad joke.

Again, to all the fellow dads, I apologise if I'm sounding too harsh. But I just needed to get it off my chest.

Alot of great jokes get posted here! However just because you have a joke, doesn't mean it's a dad joke.

THIS IS NOT ABOUT NSFW, THIS IS ABOUT LONG JOKES, BLONDE JOKES, SEXUAL JOKES, KNOCK KNOCK JOKES, POLITICAL JOKES, ETC BEING POSTED IN A DAD JOKE SUB

Try telling these sexual jokes that get posted here, to your kid and see how your spouse likes it.. if that goes well, Try telling one of your friends kid about your sex life being like Coca cola, first it was normal, than light and now zero , and see if the parents are OK with you telling their kid the "dad joke"

I'm not even referencing the NSFW, I'm saying Dad jokes are corny, and sometimes painful, not sexual

So check out r/jokes for all types of jokes

r/unclejokes for dirty jokes

r/3amjokes for real weird and alot of OC

r/cleandadjokes If your really sick of seeing not dad jokes in r/dadjokes

Punchline !

Edit: this is not a post about NSFW , This is about jokes, knock knock jokes, blonde jokes, political jokes etc being posted in a dad joke sub

Edit 2: don't touch the thermostat

Do your worst!

How the hell am I suppose to know when it’s raining in Sweden?

Mathematical puns makes me number

Ants don’t even have the concept fathers, let alone a good dad joke. Keep r/ants out of my r/dadjokes.

But no, seriously. I understand rule 7 is great to have intelligent discussion, but sometimes it feels like 1 in 10 posts here is someone getting upset about the jokes on this sub. Let the mods deal with it, they regulate the sub.

They were cooked in Greece.

I'm surprised it hasn't decade.

We told her she can lean on us for support. Although, we are going to have to change her driver's license, her height is going down by a foot. I don't want to go too far out on a limb here but it better not be a hack job.

He lost May

Now that I listen to albums, I hardly ever leave the house.

Don't you know a good pun is its own reword?

Two muffins are in an oven, one muffin looks at the other and says "is it just me, or is it hot in here?"

Then the other muffin says "AHH, TALKING MUFFIN!!!"

For context I'm a Refuse Driver (Garbage man) & today I was on food waste. After I'd tipped I was checking the wagon for any defects when I spotted a lone pea balanced on the lifts.

I said "hey look, an escaPEA"

No one near me but it didn't half make me laugh for a good hour or so!

Edit: I can't believe how much this has blown up. Thank you everyone I've had a blast reading through the replies 😂

It really does, I swear!

And now I’m cannelloni

Because she wanted to see the task manager.

But that’s comparing apples to oranges

And boy are my arms legs.

Put it on my bill

Heard they've been doing some shady business.

but then I remembered it was ground this morning.

Edit: Thank you guys for the awards, they're much nicer than the cardboard sleeve I've been using and reassures me that my jokes aren't stale

Edit 2: I have already been made aware that Men In Black 3 has told a version of this joke before. If the joke is not new to you, please enjoy any of the single origin puns in the comments

BamBOO!

They’re on standbi

A play on words.

Calcium, nickel, neon